US2428472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tracer for electrically operated and controlled duplicating machines
Assignee: Niles Bement Pond Co
•
Filing: 1945-07-09
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Granted: 1947-10-07
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Expires: 1965-07-09
Abstract
No abstract record available.
Inventors
- 👤 John C Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:31
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/24; B23Q35/26; B23Q35/30; B23Q35/32; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/303416; Y10T409/303472; Y10T409/303528
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2036362A
Cited
US2007899A
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US2107063A
Cited
US2162491A
Cited
US2216924A
Cited
US2249413A
Cited
US2395525A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-06 | 1951-04-07 | 1951-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-06 | 1955-04-07 | 1955-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-06 | 1959-04-07 | 1959-10-07 | $7700.00 | Window Closed / Lapsed |